Network Security Protocols: A Tutorial - PowerPoint PPT Presentation

Radia Perlman March 2004 (radia.perlman@sun.com). Network Security Protocols: A Tutorial. Purpose of this tutorial. A quick intro into a somewhat scary field A description of what you need to know vs what you can trust others to do To make the field non-intimidating

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“Humans are incapable of securely storing high-quality cryptographic keys, and they have unacceptable speed and accuracy when performing cryptographic operations. They are also large, expensive to maintain, difficult to manage, and they pollute the environment. It is astonishing that these devices continue to be manufactured and deployed, but they are sufficiently pervasive that we must design our protocols around their limitations.”

Until a few years ago, you could connect to the Internet and be in contact with hundreds of millions of other nodes, without giving even a thought to security. The Internet in the ’90’s was like sex in the ’60’s. It was great while it lasted, but it was inherently unhealthy and was destined to end badly. I’m just really glad I didn’t miss out again this time. —Charlie Kaufman